$106 Find Cheap Flights from Portland to Costa Rica

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Costa Rica departing on 2/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Costa Rica

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Portland to Costa Rica

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
San José
San José2 stops$248
Liberia
Liberia2 stops$351
San José
San José2 stops$248
Liberia
Liberia2 stops$351

Book Cheap Portland to Costa Rica Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Costa Rica that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Costa Rica

Tue, Jan 27 - Sat, Feb 7
American Airlines Logo
5:07 pm - 1:13 pmPWM-SJO
21h 06m2 stops
American Airlines Logo
6:38 am - 9:37 pmSJO-PWM
13h 59m2 stops
$248American Airlines
Find Deal
Sun, Feb 1 - Tue, Feb 10
American Airlines Logo
5:20 am - 10:30 pmPWM-SJO
18h 10m2 stops
American Airlines Logo
6:00 am - 11:43 pmSJO-PWM
16h 43m2 stops
$255American Airlines
Find Deal
Tue, Jan 27 - Mon, Feb 9
United Airlines Logo
11:00 am - 7:53 pmPWM-SJO
9h 53m1 stop
United Airlines Logo
6:30 am - 11:30 pmSJO-PWM
16h 00m2 stops
$268United Airlines
Find Deal
Sun, Jan 25 - Mon, Feb 9
Delta Logo
5:30 am - 10:15 pmPWM-SJO
17h 45m1 stop
Delta Logo
7:00 am - 10:29 pmSJO-PWM
14h 29m1 stop
$296Delta
Find Deal
Wed, Jan 28 - Mon, Feb 9
Delta Logo
6:17 am - 10:15 pmPWM-SJO
16h 58m2 stops
Delta Logo
7:00 am - 10:29 pmSJO-PWM
14h 29m1 stop
$300Delta
Find Deal
Mon, Jan 26 - Sat, Feb 7
American Airlines Logo
5:20 am - 9:02 pmPWM-SJO
16h 42m2 stops
American Airlines Logo
2:54 pm - 3:31 pmSJO-PWM
23h 37m2 stops
$308American Airlines
Find Deal
Tue, Jan 27 - Sun, Feb 8
American Airlines Logo
5:07 pm - 1:13 pmPWM-SJO
21h 06m2 stops
American Airlines Logo
4:01 pm - 12:05 pmSJO-PWM
19h 04m2 stops
$313American Airlines
Find Deal
Sun, Jan 25 - Thu, Feb 12
American Airlines Logo
6:00 am - 10:30 pmPWM-SJO
17h 30m2 stops
American Airlines Logo
7:00 am - 10:49 pmSJO-PWM
14h 49m2 stops
$316American Airlines
Find Deal
Sun, Feb 1 - Tue, Feb 10
United Airlines Logo
4:10 pm - 12:55 pmPWM-LIR
21h 45m1 stop
United Airlines Logo
8:35 am - 11:30 pmLIR-PWM
13h 55m2 stops
$486United Airlines
Find Deal
Sat, Jan 10 - Sat, Jan 17
Delta Logo
5:30 am - 1:50 pmPWM-LIR
9h 20m1 stop
Delta Logo
12:35 pm - 10:29 pmLIR-PWM
8h 54m1 stop
$499Delta
Find Deal
Booking Insights

KAYAK's insights & trends for Portland to Costa Rica flights

Get data-powered insights and trends into flights from Portland to Costa Rica to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Portland to Costa Rica?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Costa Rica, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to Costa Rica is September, when tickets cost $431 (return) on average. On the other hand, the most expensive months are December and April, when the average cost of round-trip tickets is $1,778 and $1,084 respectively.

What’s the cheapest day of the week to fly from Portland to Costa Rica?

The average price of all round-trip flights from Portland to Costa Rica clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Costa Rica on a Thursday and more expensive on a Friday. On your return trip to Portland, you should consider flying back on a Tuesday, and avoid Wednesdays for better deals.

Good to know

Low seasonSeptember
Cheapest flight$106
Best time to beat the crowds with an average 45% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Portland to San José

FAQs - booking Costa Rica flights

  • How does KAYAK find such low prices on flights from Portland to Costa Rica?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Costa Rica.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Costa Rica?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Portland to Costa Rica is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Costa Rica?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Portland to Costa Rica with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Costa Rica?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Portland to Costa Rica up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Costa Rica?

    The cheapest time of day to fly to Costa Rica is generally in the evening, when round-trip flights cost $397 on average. Morning departures are around 117% more expensive than evening flights, on average. The most expensive time of day to fly to Costa Rica is generally in the morning, which is peak travel time and where the average cost of a ticket is $861.

Reviews of the top 4 airlines serving from Portland to Costa Rica

 
Need help choosing which airline to fly with from Portland to Costa Rica? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4235 reviews
8.6Crew
8.0Comfort
7.5Entertainment
7.0Food
8.1Boarding
Airline reviews

It was rough. The staff was unprofessional, the choice of on board drinks terrible, it was cramped in space at every airport, they always ran out of overhead bin space so they pressured people to check bags for free or we couldn’t leave on the plane— so I did check my bag to help, and they nearly lost my bag. My bag did not arrive on the luggage belt, another man on my flight and I had to waste our time going to the baggage office to search for our bags. I would only fly southwest again if it was my last choice. Also, my flights were consistently delayed over and over again— at one point they straight up told us we were waiting for the pilot to arrive.

2.0 MediocreCharity, Nov 2025MSP - MDW
Read more Southwest reviews

It was rough. The staff was unprofessional, the choice of on board drinks terrible, it was cramped in space at every airport, they always ran out of overhead bin space so they pressured people to check bags for free or we couldn’t leave on the plane— so I did check my bag to help, and they nearly lost my bag. My bag did not arrive on the luggage belt, another man on my flight and I had to waste our time going to the baggage office to search for our bags. I would only fly southwest again if it was my last choice. Also, my flights were consistently delayed over and over again— at one point they straight up told us we were waiting for the pilot to arrive.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Had to get off plane from prior flight even though I had to reboard same plane to continue to my final destination.

Everything a cheap airline should be at normal airline rates.

Plane crashed into a bus or some other vehicle on the ground while pulling out of the gate. No injuries, but wing tip was damaged and returned to gate for “maintenance issues” and we departed 5 hours later because the plane went out of service and new plane was flown in from a nearby airport, Midway.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Full cans of soda would be nice. A choice between two snacks would be appreciated.

Tried watching free movie and it kept freezing so I couldn’t finish.

All was good. I just had a hard time getting connected to the WiFi/internet during the flight

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

Plenty of leg room, temperature was great and staff was excellent. Would do it more often.

The ticket agents in West Palm Beach on Friday afternoon Nov. 7th were incredible in getting us on an earlier plane to Atlanta during the government shutdown. Had the taken our original flight we would have missed our connection. She did this on her own, We didn't even have to ask, and she did it all with a smile and showing genuine concern that we would be taken care of. We are very grateful and thankful. We fly often, and now we will be sure to fly Delta.

Flight delayed then cancelled. Misplaced luggage. Still do not have. Rented car 1100 mile drive. I had to buy some overnight Hotels clothes toiletries gas food at my expense. Still not home. Not sure where luggage is. Over 4 hours on hold to Felta

I truly love flying with Delta. They have always treated me with the upmost respect

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

Older aircraft, no meal, only food was for purchase. Not impressed United.

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

Always wish for more healthy, gluten free options. We have to bring our own.

Having a long layover, I was very appreciative of the ability to stand by for an earlier flight. Other airlines like Delta have refused this to me in the past, just to be mean (because my ticket class wasn't high enough). United went out of their way to help me get to my destination early, which I really appreciated given that it was the third leg of a 24+ hour journey for me.

Other than a way way too cold cabinets for the entire flight, all was great

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

My experience on this United Airlines flight was highly uncomfortable, primarily due to two issues: Cabin Temperature: The temperature on the Boeing 737 MAX 8 was unacceptably high, feeling consistently around 80 degrees throughout the flight. This made sleeping impossible and significantly detracted from the experience. Seating Arrangement: Being stuck in a middle seat for a six-and-a-half-hour overnight flight compounded the discomfort. Moving forward, I will always purchase a seat assignment to avoid this situation.

we landed at cmh ten minutes early but had to sit on tarmac for twenty minutes because a plane was at our gate despite the fact that 3 other gates were open.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

I have a gluten allergy so did have any food

I have a gluten allergy so didn't have any food

Loved the crew . Absolutely no complaints. Except for luggage lost

Everything was good The connects, with no blame to crew. Or pilots. I understand they are short staffed. Everything went well for me. I'll be using you guys again in May if not sooner.

this plane was really old, had exit row seats and tray was in arm of seat so super uncomfortable to use. another seat they could t even use the tray it was broke. seat i. front of me had duct tape on it cause seat was ripped open... this plane should either be updated or retired.

We were very rushed by a staff member at the gate when transferring from American Airlines to Fijian. Then the plane stayed put for ages anyhow! The plane was delayed and my bag sent to San Francisco instead of Fiji

Baggage handling poor. Second time this has happened. My bag went to San Francisco instead of Fiji. No apology. Luckily Nadi airport staff are fantastic. My bag arrived in Fiji the next day.

We loved the steward on the plane. He made the night enjoyable

Everything you need to know for your flight from Portland to Costa Rica

Information on your arrival and departure airports